I used the gazelle for about a year. It is good if you are just starting out in exercise but once your body has gotten used to it, it doesn't seem to work anymore. There is no real challenge. The newer models with the tension work better. However anyone who uses this product needs to understand that if you are not self motivated to work harder and faster; then you will end up plateuing very quickly. The nice thing about this product is it's low impact. No more hurting your knees. It is also good for anyone who has had problems with shoulders. If you can't use the arms; you can just rest them and let your legs do all the work. Another issue that I have had with this product is after longterm use; the gazelle begins to squeak really bad. I don't know how many times I have put wd 40 in the joints. It will work for a little while but then it will just start squeaking again.